FreeBSD/Linux Kernel Cross Reference
sys/arm/ti/ti_machdep.c

     /*-
      * Copyright (c) 1994-1998 Mark Brinicombe.
      * Copyright (c) 1994 Brini.
      * All rights reserved.
      *
      * This code is derived from software written for Brini by Mark Brinicombe
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
     * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     * 3. All advertising materials mentioning features or use of this software
     *    must display the following acknowledgement:
     *      This product includes software developed by Brini.
     * 4. The name of the company nor the name of the author may be used to
     *    endorse or promote products derived from this software without specific
     *    prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY BRINI ``AS IS'' AND ANY EXPRESS OR IMPLIED
     * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
     * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     * IN NO EVENT SHALL BRINI OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
     * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
     * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     * SUCH DAMAGE.
     *
     * from: FreeBSD: //depot/projects/arm/src/sys/arm/at91/kb920x_machdep.c, rev 45
     */
    
    #include "opt_platform.h"
    
    #include <sys/cdefs.h>
    __FBSDID("$FreeBSD: releng/10.0/sys/arm/ti/ti_machdep.c 251586 2013-06-09 22:51:11Z cognet $");
    
    #define _ARM32_BUS_DMA_PRIVATE
    #include <sys/param.h>
    #include <sys/systm.h>
    #include <sys/bus.h>
    
    #include <vm/vm.h>
    #include <vm/pmap.h>
    
    #include <machine/bus.h>
    #include <machine/frame.h> /* For trapframe_t, used in <machine/machdep.h> */
    #include <machine/machdep.h>
    #include <machine/pmap.h>
    
    #include <arm/ti/omap4/omap4_reg.h>
    
    /* Start of address space used for bootstrap map */
    #define DEVMAP_BOOTSTRAP_MAP_START      0xF0000000
    
    void (*ti_cpu_reset)(void);
    
    vm_offset_t
    initarm_lastaddr(void)
    {
    
            ti_cpu_reset = NULL;
            return (DEVMAP_BOOTSTRAP_MAP_START - ARM_NOCACHE_KVA_SIZE);
    }
    
    void
    initarm_gpio_init(void)
    {
    }
    
    void
    initarm_late_init(void)
    {
    }
    
    #define FDT_DEVMAP_MAX  (2)             // FIXME
    static struct pmap_devmap fdt_devmap[FDT_DEVMAP_MAX] = {
            { 0, 0, 0, 0, 0, }
    };
    
    
    /*
     * Construct pmap_devmap[] with DT-derived config data.
     */
    int
    platform_devmap_init(void)
    {
            int i = 0;
    #if defined(SOC_OMAP4)
            fdt_devmap[i].pd_va = 0xF8000000;
            fdt_devmap[i].pd_pa = 0x48000000;
            fdt_devmap[i].pd_size = 0x1000000;
            fdt_devmap[i].pd_prot = VM_PROT_READ | VM_PROT_WRITE;
            fdt_devmap[i].pd_cache = PTE_DEVICE;
           i++;
   #elif defined(SOC_TI_AM335X)
           fdt_devmap[i].pd_va = 0xF4C00000;
           fdt_devmap[i].pd_pa = 0x44C00000;       /* L4_WKUP */
           fdt_devmap[i].pd_size = 0x400000;       /* 4 MB */
           fdt_devmap[i].pd_prot = VM_PROT_READ | VM_PROT_WRITE;
           fdt_devmap[i].pd_cache = PTE_DEVICE;
           i++;
   #else
   #error "Unknown SoC"
   #endif
   
           pmap_devmap_bootstrap_table = &fdt_devmap[0];
           return (0);
   }
   
   struct arm32_dma_range *
   bus_dma_get_range(void)
   {
   
           return (NULL);
   }
   
   int
   bus_dma_get_range_nb(void)
   {
   
           return (0);
   }
   
   void
   cpu_reset()
   {
           if (ti_cpu_reset)
                   (*ti_cpu_reset)();
           else
                   printf("no cpu_reset implementation\n");
           printf("Reset failed!\n");
           while (1);
   }

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